Performance Foam 45 by Ultralon®

Closed-cell polyolefin foams

Performance Foam 45 is a family of closed-cell polyolefin foams. Available in different thicknesses, the foam comes in two versions: by itself, with self-adhesive treatment, or laminated.

The non-laminated version of Performance Foam 45 can be thermoformed easily, which makes it suitable as padding in the most delicate areas of booties for ski boots of all kinds, like the tongue and the ankle pads, where it is crucial to provide personalized comfort and protection, molded to the shape of the wearer’s foot.

In the laminated version, Performance Foam 45 is supplied in a two-layer form, with textiles (preferably bi-elastic).

The foam is ideal for the lining of booties for alpine ski boots and high-performance ski mountaineering boots: comfort, light weight and the possibility of thermoforming and customization for the end user are its winning features.


100 cm


Light gray


PE/EVA closed-cell Polyolefin foam

Density kg/m3

45 kg/m3

Available thicknesses

The item is available in different thicknesses 5, 7, 10, 12 mm


Asoltex supplies this product by itself or in a self-adhesive version.
Also available in a pierced version.

Main applications

Ski boots padding

Other features

Flexalon comes in slabs (height 100 cm, length 200 cm). It is supplied in rolls of 50 meters, with the slabs joined at 45° or 90°.

Shore hardness Sh 50/52°°
Hardness Asker C 25

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